Almost a week ago is only 5-6 days if you put it in that perspective. recovery, especially with warmer weather and all the stuff floating around you might still be a bit coarse in the throat, but that's just a thought. the more you think of it, the more you will feel the itchiness and scratchiness, because it is a bother and your body likes to be at peace and rid yourself of discomfort. A lot of the anxiety tends to play things out more in the mind than in the realm of reality. I know it's pretty warm out, but have you considered some tea or honey type remedy to help ease that?
The girlfriend came down with pretty bad flulike symptoms which turned into a more coldlike symptoms... which have carried out for almost two weeks now... and still going. she's got a rather scratchy feeling in her throat she says but her voice hasn't changed much. she still attempts to clear her throat every now and again, especially when going from sitting up to lying down. even a mild panic attack, as you said triggers your coughing, thus causing more irritation in your throat and in your mind of trying to figure out what is wrong. I grind or bounce my jaw, and teeth around... subconciously... especially in class... teeter-tottering my jaw from my left side to right side... in fact I'm doing it right now... and never does it occur to me through pain.... but when I notice I'm doing it all of a sudden the sides of my cheeks/jaw start to "hurt". until I stop thinking about it. Either I'm a pain-dodging mastermind or the mind is playing tricks on me... either or, it just goes to show how even mild worry can make a whole lot of difference.
Not belitteling what's going on with you, just trying to ease your mind a bit.
Hope you have a good night.